1.What you're looking at is an authentic windows license package. product key is never used, and will 100% activate without any problem2. If you DON’T have installed Windows 10 Pro at your machine you need download the Media Creation tool from official MS website and follow the rest of the setup instructions to finish installing Windows.
3. If you have already installed Windows 10 Pro at your machine and just need to activate it:
Select the Start button, then select Settings > Update & security > Activation

Windows 10 is your partner in making things happen. Get faster start-ups, a familiar yet expanded Start menu, and great new ways to get stuff done even across multiple devices. You’ll also love the innovative features like an all-new browser built for online action, plus Cortana, the personal digital assistant who helps you across your day.

System Requirements:

•1 GHz processor or faster.

•1 GB RAM for 32-bit; 2 GB for 64-bit.

•Up to 20 GB available hard disk space.

•800 x 600 screen resolution or higher.

•DirectX® 9 graphics processor with WDDM driver.

•Internet access (fees may apply).

•Microsoft account required for some features.

•Watching DVDs requires separate playback software.

• Single PC for single license.

OEM Software -Microsoft's Distribution Agreement for System Builders states that the system builder software packs are not intended for distribution to end users unless the end users are acting as system builders by assembling their own PCs.A "system builder" is anyone who assembles, reassembles or installs software on a new or used computer system. For OEM software, your software will be bundled with an AS IS non-working hard drive.

Lots of great free and paid apps, games, movies, TV, and music in the Windows Store

Epic gaming with the best games, graphics and Xbox built in

Easy access to your files and photos from anywhere with OneDrive online storageAutomatic updates help keep you current on features and securityWindows 10 is so familiar and easy to use,you'll feel like an expert. The Start Menu is back in an expanded form,plus your pinned apps and favorites are brought over so they're ready and waiting for you. It starts up and resumes fast,has more built-in security to help keep you safe,and is designed to work with software and hardware you already have.

Windows 10 Pro is a desktop edition for PCs, tablets and 2-in-1s. Building upon both the familiar and innovative features of Windows 10 Home,it has many extra features to meet the diverse needs of small businesses. Windows 10 Pro helps to effectively and efficiently manage their devices and apps,protect their sensitive business data,support remote and mobile productivity scenarios and take advantage of cloud technologies. Windows 10 Pro devices are a great choice for organizations supporting Choose Your Own Device (CYOD) programs and prosumer customers. Windows 10 Pro also lets customers take advantage of the new Windows Update for Business,which will reduce management costs,provide controls over update deployment,offer quicker access to security updates and provide access to the latest innovation from Microsoft on an ongoing basis.